發(fā)布時間：2019-01-21 21:27

【摘要】：行星齒輪傳動由于具有重量輕、承載能力強及效率高等優(yōu)點,廣泛應(yīng)用于各個工業(yè)領(lǐng)域�？紤]到行星齒輪傳動的承載性能,就要求系統(tǒng)各構(gòu)件具有足夠的強度和可靠性。而行星架作為行星齒輪傳動中關(guān)鍵性零件之一,它的變形對齒輪嚙合所產(chǎn)生的接觸應(yīng)力分布影響較大,所以行星架要具有足夠的靜強度和一定的剛度。理論上,行星齒輪傳動系統(tǒng)的載荷由各行星輪均衡承擔(dān),但是由于零部件的制造誤差、安裝誤差及變形的存在,使得各個行星輪間載荷分配并不均衡,這就一方面增加了行星輪的設(shè)計載荷,一方面增加了系統(tǒng)的振動和噪聲。行星架作為行星齒輪傳動系統(tǒng)的主要構(gòu)件之一,它的結(jié)構(gòu)變形和誤差參數(shù)對整個系統(tǒng)的均載性能有著較大的影響。目前國內(nèi)對行星架的研究主要集中在中小型及結(jié)構(gòu)較為簡單的行星架,對大功率船用行星齒輪箱中結(jié)構(gòu)復(fù)雜的行星架研究較少,而且對于行星架的各個因素對整個行星齒輪傳動系統(tǒng)均載性能影響分析還不夠深入。因此,開展大功率船用行星齒輪系統(tǒng)主要構(gòu)件行星架的理論研究,確定各種影響因素與系統(tǒng)不均載系數(shù)之間的關(guān)系,具有重要的工程應(yīng)用背景,其研究成果對行星齒輪傳動系統(tǒng)的設(shè)計具有指導(dǎo)意義。 本文以大功率船用行星減速器差動級行星架為研究對象,通過靜力學(xué)計算得到行星架所受靜載荷,并用常規(guī)計算方法和有限元法分別對差動級行星架剛度進行校核。用大型有限元分析軟件ANSYS對行星架進行約束模態(tài)分析,介紹了瞬態(tài)動力學(xué)分析的基本概念和分析目標(biāo),比較了三種瞬態(tài)動力學(xué)分析方法的優(yōu)劣,詳細(xì)介紹了模態(tài)疊加法的基本計算理論。以動力學(xué)計算的動載荷為輸入載荷,對行星架進行瞬態(tài)動力學(xué)分析,得到行星架瞬態(tài)位移響應(yīng),并對行星架瞬態(tài)位移響應(yīng)進行穩(wěn)態(tài)判斷。分析了行星架制造誤差和安裝誤差,建立了差動級系統(tǒng)不均載系數(shù)集中質(zhì)量模型,編寫了計算流程,計算了功率分流型行星齒輪傳動中各行星輪和太陽輪嚙合力的變化狀態(tài)以及行星齒輪傳動系統(tǒng)差動級不均載系數(shù)。在此基礎(chǔ)上單獨分析了誤差、行星架剛度、質(zhì)量和轉(zhuǎn)速對不均載系數(shù)的影響。分析了行星架各結(jié)構(gòu)參數(shù)對行星架最大應(yīng)力和最大變形的局部靈敏度和全局靈敏度的影響,并在靈敏度分析的基礎(chǔ)上對行星架進行結(jié)構(gòu)優(yōu)化,比較優(yōu)化前后應(yīng)力和變形分布,檢驗優(yōu)化結(jié)果的有效性。
[Abstract]:Planetary gear transmission is widely used in various industrial fields because of its advantages of light weight, strong bearing capacity and high efficiency. Considering the bearing capacity of planetary gear transmission, it is necessary to have enough strength and reliability for each component of the system. As one of the key parts in planetary gear transmission, the deformation of planetary frame has a great influence on the distribution of contact stress produced by gear meshing, so the planetary frame should have enough static strength and certain stiffness. In theory, the load of planetary gear transmission system is balanced by each row star wheel, but due to the components manufacturing error, installation error and the existence of deformation, the load distribution among the planetary gear is not balanced. This not only increases the design load of the planetary gear, but also increases the vibration and noise of the system. As one of the main components of planetary gear transmission system, the structure deformation and error parameters of planetary frame have great influence on the load sharing performance of the whole system. At present, the research on the planetary frame is mainly focused on the small and medium-sized planetary rack with simple structure, but the complex planetary frame in the high-power marine planetary gearbox is less studied. Moreover, the analysis of the influence of every factor of the planetary frame on the load performance of the whole planetary gear transmission system is not enough. Therefore, it has important engineering application background to carry out the theoretical research on the planetary frame, which is the main component of high-power marine planetary gear system, and to determine the relationship between various influencing factors and the uneven load coefficient of the system. The research results have guiding significance for the design of planetary gear transmission system. In this paper, the differential planetary frame of high power marine planetary reducer is taken as the research object, the static load of the planetary frame is obtained by statics calculation, and the stiffness of the differential planetary frame is checked by conventional calculation method and finite element method respectively. The finite element analysis software ANSYS is used to analyze the constrained modes of the planetary frame. The basic concepts and objectives of the transient dynamic analysis are introduced, and the advantages and disadvantages of the three transient dynamic analysis methods are compared. The basic calculation theory of modal superposition method is introduced in detail. Taking the dynamic load calculated by dynamics as the input load, the transient dynamic response of the planetary frame is obtained by transient dynamic analysis, and the transient displacement response of the planetary frame is judged stably. The manufacturing error and installation error of planetary frame are analyzed, the lumped mass model of uneven load coefficient of differential stage system is established, and the calculation flow is compiled. The variation state of the meshing force between the star wheel and the solar wheel and the differential load coefficient of the planetary gear transmission system are calculated. On this basis, the effects of error, planetary frame stiffness, mass and rotational speed on the uneven load coefficient are analyzed separately. The influence of structural parameters on the local and global sensitivity of the maximum stress and deformation of the planetary frame is analyzed. Based on the sensitivity analysis, the structure of the planetary frame is optimized, and the distribution of stress and deformation before and after optimization is compared. Verify the effectiveness of the optimization results.
【學(xué)位授予單位】：中國艦船研究院
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2011
【分類號】：TH132.46

【引證文獻】

相關(guān)期刊論文 前1條

1 周紹利;趙雪利;趙克利;任峰;石振;;推土機行走減速器行星架結(jié)構(gòu)的優(yōu)化[J];中國工程機械學(xué)報;2012年03期

相關(guān)碩士學(xué)位論文 前1條

1 侯秋涼;偏航齒輪箱行星架的性能分析及結(jié)構(gòu)優(yōu)化設(shè)計[D];大連理工大學(xué);2013年

，

本文編號：2413057